DNS not resolving outside names

Question

_{Sunday, July 23, 2017 6:25 AM | 1 vote}

Hello,

Good Day! 

Kindly be informed that we have issue with our DNS (DNS not resolving outside names) 

All Server is Windows 2012 R2 

Thanks 

Dweik

All replies (9)

_{Sunday, July 23, 2017 9:00 AM}

Hi

1-Check internet connectivity on your DNS server.

2- add google public DNS "8.8.8.8" as forwarder

3- add DNS reverse lookup zone

_{Monday, July 24, 2017 7:32 AM}

Hi Dweik，

As Ahmed Abdulwahed said, you could first check the internet connectivity.

Did you configure the forwarder to forward DNS queries for external DNS names to DNS servers outside that network?

The DNS address of Domain Controller should be itself .We could configure external DNS address as forwarders .

For your reference:

Configure a DNS Server to Use Forwarders

https://technet.microsoft.com/en-us/library/cc754941%28v=ws.11%29.aspx?f=255&MSPPError=-2147217396

Then ,we configure clients with IP address of Domain Controller as DNS server .

If it still doesn’t work ,You may turn on exhaustive debugging mode of NSlookup, this will display detailed information of name resolving process.

Open Command Prompt on client ,type nslookup and type set d2 .Then type google.com ,we could find out the problem through the process .

>NSlookup

>set d2

>[name which you want to resolve]

Here is the guide for Nslookup :

Nslookup

https://technet.microsoft.com/en-us/library/cc940085.aspx

Best Regards,

Candy

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_{Tuesday, July 25, 2017 7:34 AM}

Hello,

here below my answer 

1-Check internet connectivity on your DNS server.

yes there is internet

2- add google public DNS "8.8.8.8" as forwarder

i did not try that 

3- add DNS reverse lookup zone

it configured and working after one hour it is shows not resolving so i have to restart the DNS Servers 

Dweik

_{Tuesday, July 25, 2017 7:35 AM}

Hello,

it was working before then suddenly not resolve , if i restart dns services it work temp.

Dweik

_{Tuesday, July 25, 2017 9:19 AM}

Hi Dweik，

>>yes there is internet

Please first check your network connectivity.

a. Type  ipconfig /all to view IP configuration details.

b. Using the ping command to test a TCP/IP connectivity.

For your reference:

Network Connectivity

https://technet.microsoft.com/en-us/library/cc961803.aspx

>>i did not try that

Please configure external DNS address as forwarders to check if the problem still occurs.

If it still doesn’t work, please turn on exhaustive debugging mode of NSlookup, this will display detailed information of name resolving process.

>NSlookup

>set d2

>[name which you want to resolve]

>>it was working before then suddenly not resolve , if i restart dns services it work temp.

In addition, please check the event logs to see if there is something useful for us to troubleshooting.

Best Regards,

Candy

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_{Tuesday, July 25, 2017 4:41 PM}

You can try using a live debugging tool like Sonar Lite to check your DNS resolution and run a lot of other tests from many locations around the world in real time. This might help you pin-point an issue. 

_{Monday, July 31, 2017 9:24 AM}

Hi Dweik，

Just want to confirm the current situations.

Please feel free to let us know if you need further assistance.             

Best Regards,

Candy

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_{Monday, July 31, 2017 9:45 AM}

Hi

Nothing i opened case with microsoft Support

regards 

Dweik

_{Monday, July 31, 2017 10:07 AM}

Hi Dweik,

Thanks for your updating. If you have any results, you could post it on the forum which would be helpful to anyone who encounters similar issues.

Best Regards,

Candy

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